Erastus d



(No Model.)

B. D. MOORE. ELECTRIC ANNUNGIATOR..

No. 482,263. Patented Sept. 6, 1892.

61mm 19 771cm WITNESSES: INVENTOH .fia/YZL BY f ,(Qmw m ATTORNEY.

UNITED STATES PATENT OFFICE ERASTUS D. MOORE, OF NEW YORK, N. Y.

ELECTRIC ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 482,263, datedSeptember 6, 1892. Application filed February 18, 1892. Serial No.422,059. (No model.)

To aZZ whom it may concern:

Be it known that I, ERASTUS D. MOORE, a citizen of the United States,residing at New York city. in the county of New York and State of NewYork, have invented a new and usefulImprovementinElectricAnnunciators,of which the following is a specification, reference being had to theaccompanying drawings.

My invention relates to electric annunciators for hotels,burglar-alarms, &c.; and it consists in the combination of parts andmechanism for operating the same, substantially as hereinafterdescribed, and specifically pointed out in my claims.

In the'accompanying drawings, Figure l is a perspective view of anannunciator embodying my invention. Fig. 2 is a side elevation showingthe apparatus in operation, dotted lines showing the movement of thearmature d and shutter e and the action of the springf. Fig. 3 is a rearview of the same.

My invention comprises the frame a, helix b, magnet-core c, armature d,number or indicator plate 6, spring f, pivot g, pivot 2', and auxiliarymagnet-bar j, all in combination with the frame a, as herein specified.To the frame a is screwed the magnet-core c and auxiliary magnet j.Around 0 is the helix b. The frame a is bent so that its upper arm isparallel to c. In this arm is a slot through which the armature d passesand in which it is pivoted, as shown at i. At the end of this arm isattached the indicator 6 by the pivot g, on which is wound the spiralspringf. The spiral springfand pivot g are in the slot at end of theframea. The armature cl, havinga con nterbalance-arm, is pivoted at t'and is adjacent to the core 0 of said helix b in relation to said numberor indicator plate e. All are attached to a single frame a. Every numberis independent of every other number. When an electric current passesthrough the helix 1), the magnet-core c attracts the armature d anddraws it toward 0, thus liberating the indicator e, which by means ofthe spring f springs into the position 6, in which the number on 6 maybe easily read. \Vhen at rest, the indicator or number plate 6 rests onthe armature 01, being held by a catch at an angle of about forty-fivedegrees, and the number or name is not shown until a current ofelectricity is passed through the helix Z).

I claim as my invention-- 1. The combination of the frame a, the helixb, the magnet-core c, the armature d, the indicator-plate e, the springf, pivotally mounted, as at g, and the pivot carrying the armato re, allarranged and operating substantially as and for the purpose set forth.

2. The combination of a frame having a slot therein and two projectingarms, a core mounted in a position approximately parallel with saidslot, the armature d, pivotally mounted in the slot, an indicator-platepivoted between the arms of the frame and engaging the armature, and aspring, as at f, adapted to throw the indicator-plate away from thearmature when the armature releases the plate, substantially as setforth.

ERASTUS D. MOORE.

Witnesses:

JAMES H. BATES, WM. F. A. SCHULTE.

